OutgroupG_compressaA_strabocellaA_nitidaI_pusillaI_tadjikistanensisPr_tauricaPr_inconstansPr_uncinataM_apanthesmaM_angulataM_conicotruncataM_velascoensisE_eobulloidesS_triloculinoidesPs_varianataOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Norris_1996a